Flush valve



Dn EL, 31923.

l F. B. EDELL FLUSH VALVE 2 Sheets-Sheet 31 Filed July 26 1920 retreated nee. n, tere.

PATENT @FFHQEO FRED B. EDELL, OF CHICAGO, ILLINOJIS.

FLUSH VALVE,

Application filed .Yury 26, 1920. Serial No. 398,851.

To all-whom# may concern:

Be it known that l, FRED B. EDnLL,a citizen of the United States, and a resident of Chicago, county of Cook, and State of Ile linois, have invented certain new and useful Improvements in Flush'Valves, of which the following is a specification, and which are illustrated in the accompanying drawings, forming a part thereof.

The invention relates to flushvalves for water closets, and the like, and has as an object the provision of a valve that will allow a predetermined amount of water to flow into the'bowl, after which the flow will be cut o even though the starting device be held open. l

Further objects will appear from the following description when read in connection with the accompanying drawings, in which- Fig. 1 is a partial plan View;

Fig. 2 is a central vertical section on line 2 2 of Fig. 1;

Fig. 3 is a transverse section on line 3-3 of Fig. 2;

Fig.` 4 is a detail central vertical section of a modified form of control disk;

Fig. 5 is a detail verticalsection on line 5--5 of Fig. 1;

Fig. .6 is a partial plan view of a modified form of the device; and

Fig. 7 is a central vertical section "on line 7-7 of Fig. 6.

As shown'the device comprises a base 10 and an upper portion'll preferably secured to said base by screws 12, the joint between the two parts, being desirably provided with a gasket, as 13. The base 10 is shown as provided with an inlet passagev 14, screwthreaded for attachment of a pipe connect- 4o ed with a supply of water under pressure and with an outlet 15, exteriorly threaded at 16 for connection, as by a union, with a water closet bowl,

To control the 'flow of water from the in- 45 let to the outlet there is shown an opening 17 surrounded by a valve seat 18 and controlled by a valve 19. The valve 19 1s shown as comprising a cylindrical member 20, interiorly screw-threaded and provided 6o with a flange 21 for reception of a gasket 22,

and a flange 23 ormingthe base member of a piston. To retain the-gasket 22 upon the valve there is shown a member having a stem portion 24, threaded for engagement, with the screwthreaded interior of cylinder 20, et a shoulder 25, and at its lower portion any suitable form of lguide means, as crossed webs 26, to guide the valve to its seat.

To control the action of the valve 19 there is shown a piston comprising the langen23 eo as abase, a cup leather 27, and a cup leather retaining member having a flange 28 and a threaded stem 29 for engagement with the threaded interior of the cylinder N20. The piston is shown as coacting with the cylin- @e drical interior of a control chamber 30, comprising the major portion of the interior of the upper portion 11 of the device.

To allow the water under pressure access to the control 'chamber 30 a passage 31 is te shown opening into the chamber Yat 32. Means to adjust the rate of How Aof water through the passage 3l is shown, comprising'a needle valve 33 having an end Slotted, as at 34, for reception 4of a screw driver. te Thecavity in which the slotted end of the needle valve is located `may be closed by a cap 35, preferably seating on a gasket, as at 36.

With the water pressure equalized between GG) control chamber 30 and in the space 37 be,- low the piston the pressure downward upon the valve will exceed the upward pressure upon the" lower side'of the piston by the amount of pressure upon an area equal to es the areaof the circle of the valve seat. llt the pressure in control chamber 30 bereleased,'the valve will be moved upwardly by'a force of pressure upon an area equal tothe difference between the area of theA te annulus of flange 23 and that of flange 21 approximately. Thus water will ilow through the outlet 15 until the maximum pressure again exists in control chamber 30, due to flow of water pastneedle-valve 33. @e

Torelease the pressure in control chamber 30 there is shown a release valve 38, which may beheld against its seat by a spring, as 39, acting in compression. Preferably the valve seat 40 for valve 38 is carried in a thimble 41, screwed into the top of the control chamber 30 from within and having a iiange 42 adaptedto" retain a gasket 4&3, which gasketmakes a tight joint about the thimble and'also serves as a seat fora check valve 44 to be described. The stem 45 is shown apron 48 which is adapted to inclose thespring 39 and to limit the depression of the valve. vA sleeve 49 is shown surrounding-4 the button to make a pleasin lfinish. A channel 50 is provided to permit the escape of Water from control chamber 30 to the outlet 15 when the valve 41 is opened, thus relieving the pressure in the control chamber.

A defect with this type of flush valve as heretofore used has been that the user has been able to Waste water by holding a valve, as that at 41, open. To allow only a predetermined amount of water to flow before valve 19 is reseated and the fiow stopped, a check valve 44 is provided which is out of control of the user. As shown inFig. 2, this check valve comprises a cup member 52, loosely connected to a disk`53, as by a rivet 54. The disk 53 is shown as fitting loosely in chamber 30, in order that water ma gain ready access to both sides of the disk. The function of the disk 53 is to guide the cup 52 to its seat upon the gasket.

38, and it must be large enough to perform the function in coacton with the walls of the chamber 30. When the piston rises, as already describe-d, 'the cup 52 will seat against gasket 43, thus preventing'further flow through valve 41 as water flows into control chambery 30 past valve 33, even though said valve/ 41 is held open by the user. I

rllhe connection of the cup 52 to the disk 53 vis made loose to provide acertain amount of flexibility, that the cup may become seated even thoug the surface of the gasket is not parallel with the surface of the piston which supports the disk. As the pressure in the. control chamber 30 b ecomes equalized with that inspace 37 the pis/ton will return the valve 19 to its seat, leaving the check valve 44 held against gasket 43 as long as valve 41 is held open. When valve 41 is again closed there will be the effect of apartial vacuum within cup 52, which is destroyed by leaka e about the loose fitting rivet 54, and the isk and cup will return by gravity to rest upon the piston. l

A modified form of check valve, comprising a disk 55 as shown in Fig. 4, may he used, having a cup 56 integral therewith. This form of check valve is especially suitable for use with a. ground metal seat instead of the gasket shown at 43. lin this form of valve a notch, as 57,- or a minute hole, as 58, or both, may be provided tovbreak the vacuumvupon closing of therelease valve.

The amount of water which will escape through the outlet 15 before the valve 19 .reseats will be determined by the rate of flow through needle valve 33, which rate of flow may be readily adjusted,as described.

linmean seat .64, as in the form of Figs. l to 5 inf clusive. Also there is shown Va movable element, as 65, exposed to the pressureof the water in space 66 and in a control chamber 67, which pressure is equalized by flow ythrough a passage 68 under the adjustable control of a needle valve 69.

'llhe movable element 65 nis shown' as com- .prising a body 70, recessed from above at 71 and from below at 72, and having an opening, as at 73. A guide having a cylindrical inner portion 74, a flange 75, guiding Wings 76, and screw-threaded engagement with the recess 72 at 77 ,is shown.i A diaphragm 78 may be utilized which will erform the function of gaskets at 79 an 80, the latter coacting with the valve seat' 64. '1 he diaphragm is shown as held at its outslde edge by the screws 61, and at its center by the flange and body 70. A

A gasket 81 is shown held upon the ioor of the recess 71v by a ring 82. A release valve 83 is shown as seated vuponthe vgasket 81, which release valve performs the same function as that shown at 41 in Fig. 2. rlhe release valve 83 is shown as a stem 84 and guides 85,.whic llatter insure correct location .of the valve upon its seat.

To trip the valve 83 and thus relieve the pressure in chamber 67, ya stem 86 is lshown retracted by la spring 87. Stem 86 is shown rovlded with' an upper portion 60 are as-carrying a shoulder 88,4 upon which is seated a sleeve 89, having'a head 90. A diaphragm 91 is shown retained by an annular dished member 92, which in turn is clamped by thimble 93. A cap 94, screwed upon theend of stem 86, is shown as adapted to reciprocate through the annular mem` ber 92 when pressed by the button 95.

When the button 95 is pressed the valve 83 will be tilted von its seat, allowing the water to escape from chambery 67,. upon.

which the excess of pressure in space 66 will cause the diaphragm to be flexed upward and the movable member 70 torise.

A float is shown at 96, carrying a stud 97 and loosely mounted on said stud a cup 98. As the member 70 rises the gasket 81 will come into contact with the edge of the cup 98, and if the vvalve 83 be held open the c'up 98 will be held against the gasket as the water flows in through passage 68,

carrying the ioat 96 downward as the dia-Y phragm 78 is depressed against the valve seat 64. Upon closure of the valve 83 slow leakage about stud 97 will release cup 98,v and the fioat 96 will return to the posit-ion.

shown in Fig. 7. The rinciple of o eration of the form of the evice is, there ore,

terasse the same as that of the modification first described.

Many minor changes may be made in the physical embodiment of the invention with` out departing from its spirit.

I claim as m invention- 1. A flush vallve'comprising, in combination, an inlet space, a valve seat, a control chamber having communication with said space by means of a restricted passage to `equalize pressure in saidv chamber. and space, a movable member between said chamber and space exposing a greater area to said chamber' than to said space, a valve held to said seat by pressure upon said greater area, arelief valve to release the pressure in said chamber to allow the pressure in said space to open said first-named valve, a valve seat'surrounding the head of said relief valve in said chambergacup member adapted to be broughtinto contact with said surrounding valve seat upon initial movement of said movablel member and to be held in contact therewith by pressure in said chamber while said relief valve is held open and to separate therefrom upon equalization of pressure in said chamber and space when said relief valve is closedu 2. A flush valve comprising, in combination, an inlet Space, a valve seat, a control chamber having communication with said space by means of a restricted passage to equalize the pressure in said chamber and space, a piston between said chamber and space exposing a greater area to said chamber than to said space, a valve held to said seat by pressure upon said greater area, a relief valve to relieve the pressure in said chamber to allow the pressure in said space to open the first named valve and a. normally open 'valve adapted to be closed by movement of the piston to render said relief valve ineffective after a predetermined flow of water.

3. A Hush valve comprising, in combination, an inlet space, a valve seat, a control chamber having communication with said space by means of restricted passage to equalize the pressure in Said chamber and space, a piston between said chamber andspace exposing a greater area to said chamber than to said space, a valve held to said seat by pressure upon said greater area, a relief valve to relieve the pressure in said chamber to allow the pressure in said space to open the first'named valve, a normally open valve adapted to be closed by movement of the piston to render said relief valve ineffective after a redetermined How of water, and a restricted) by-pass communieating with the inlet'pressure for releasing said normally open valve.

e. A ush valve comprising, in combination, an inlet space, a valve seat, a control chamber having communication with said space by means of a restricted passage to equalize the pressure in Said chamber and space, a piston between said chamber and Space exposing a greater area to said chamber than to said space, a valve held to said seat by pressure upon said greater area, a relief valve to relieve the pressure in said chamber to allow the pressure in said space to raise the piston and open the first named valve,fay norma'ly open valve arranged' to be closed by the upward movement of the piston and adapted when closed, to render the relief valve ineffective, and means for automatically opening the normally open valve.

5. A Hush valve comprising, in combination, an inlet space, a valve seat, a control chamber having communication with said space by means of a restricted passage to equalize the pressure in said chamber and space, a piston between said chamber and space exposing a greater area to said chamber than to said space, a valve held tosaid seat by pressure upon said greater area, a relief valve to relieve the pressure in said chamber to allow the pressure in said space to raise a piston and open the first named valve, a normally open valve capable to` movement independently of the piston, arranged to be closed by the upward movement thereof and adapted whenclosed to render the relief valve ineffective, and means whereby the inlet pressure will ed'ect the opening of. said normally open valve after the first mentioned valve has closed;

6. A flush valve comprising, in combination, an inlet space, a valve seat, a control chamber having communication with said space by means of a restricted passage to equalize the pressure in said chamber and space, a piston between saidchamber and space exposing a greater area to said chamber than to said space, a valve held to said seat by pressure upon said greater area, a relief valve to relieve the pressure in said chamber to allow the ressure in Said space to raise the piston an open the first named valve, a normally open valve adapted, when closed, to render the relief valve ineffective, arranged to be closed by the upward movement of the piston, and to be held closed by' the inlet pressure and a by-pass adapted to relieve the inlet pressure and permit said normally o en valve to open.

A. flus valve comprising, in combination, an inlet space, a valve seat, a control chamber having communication with said space by lmeans of a restricted passage to equalize the pressure in said chamber and space, a piston between said chamber and space exposing a greater area to said chamber than to vsaid space, a valve held to said seat by pressure upon said greater area, a relief valve to relieve the pressure in said chamber to allow the pressure in said space lill -to raise the piston and open the rst named valve, a normall openvalve in the control chamber ada te when closed, to render the relief valve lneective and arranged to be raised to closed Position b the plston and held in that pos1tion by the inlet pressure independently of the plston and a luy-pass for relieving-the inlet pressure beneath said normally closed valve.

8. In a flush valve, a combination of a casing having an inlet and outlet, a valve controlling said outlet, a piston controlling said valve and dividing said casing into an inlet space and a control chamber, a bypass connecting said chamber and space, a second ley-pass connecting said contnol chamber and the outlet, a relief valve adapted to normally close said second by-pass and a normally opened valve closed by the linmean movement or the piston for shutting said second by-pass.

9. ln a liush valvea the combination of-a casing having an inlet, an outlet and a valve seat between said inlet and outlet, a valve for said seat, a piston connecting with said valve and dividin said casing into an inlet space and a contro chamber, a restricted ley-'pass connecting said inlet space With said control chamber, a second by-pass connecting said control chamber With said outlet, a relief valve adapted to'open said second by-pass and permit the inlet pressure to raise lthe piston and open .the first mentioned valve, a normally open valve for said second by-pass arranged to be closed b the rising of the piston and to be held cllised until the second by-pass is closed.

FRED B. EDELL. 

